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发明名称
Attachment for cutting internal gears
摘要
申请公布号
US1978064(A)
申请公布日期
1934.10.23
申请号
US19310564361
申请日期
1931.09.22
申请人
SYKES WILLIAM E
发明人
SYKES WILLIAM E.
分类号
B23F5/16
主分类号
B23F5/16
代理机构
代理人
主权项
地址
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